I stopped using RSS readers after the demise of Google Reader & my shift to Twitter. But I can't live without these sites which take me almost to all the placed on the net :)
HackerNews- Daily morning read, can't live without it.
Slashdot - News for nerds, stuff that matters :)
Techmeme - A river of news to read corporate tech news.
Kottke - I am not kidding, I read it daily to impress my 8 year old daughter - from Pixar to movies to planet discoveries.
Techdirt - Interesting debates on tech policies.
Edge.org - If you really have good supply of Coffee & very solid conversations.
Enjoy.